Corrosion Inhibition of Mild Steel by Ethanol Extract of Bitter Leaf (Vernonia Amygdalina): Effects of Inhibitor Concentration and Time
نویسندگان
1 Department of Materials and Metallurgical Engineering, University of Ilorin, Nigeria
2 Department of Environmental Management, Federal University of Technology, Nigeria
3 Department of Chemistry, University of Benin, Benin, Nigeria
4 Department of Chemistry, Federal University of Agriculture, Abeokuta, Nigeria
5 Department of Chemistry, University of Ibadan, Nigeria
6 Department of Chemical Engineering, Ladoke Akintola University of Technology, Nigeria
7 Department of Pharmacology, University of Lagos, Nigeria
8 Department of Chemical Engineering, University of Lagos, Nigeria
9 Department of Environmental Management Technology, Federal University of Technology Owerri, Nigeria
10 Department of Biochemistry, University of Lagos, Nigeria
11 Department of Mechanical Engineering, University of Port Harcourt, Nigeria
12 Department of Science Laboratory Technology Opt (Microbiology/Virology), Federal University of Technology, Nigeria
13 Department of Chemical Engineering, Federal University of Petroleum Resources Effurun, Nigeria
14 Department of Pure Chemistry, Usmanu Danfodiyo University Sokoto, Nigeria
15 Department of Chemistry, Olabisi Onabanjo University, Nigeria
16 Department of Mining and Mineral Engineering, University of Bamenda, Cameroon
17 Department of Metallurgical engineering, Yaba college of technology, Nigeria
18 Department of Metallurgical and Materials Engineering, University of Nigeria, Nigeria
19 Department of Chemical Engineering, Ladoke Akintola university of technology, Nigeria
doi
10.48309/pcbr.2024.444579.1340چکیده
The aim of this study was to test the performance of Bitter Leaf (Vernonia Amygdalina) ethanol extract as a corrosion inhibitor for mild steel in 1.5 M H2SO4 solution. The study measured the weight loss and corrosion rate of mild steel under different inhibitor concentrations (0.25-1.50 g/mL) and exposure times (1-5 days). The findings indicated that the inhibitor concentration had a positive effect on reducing the weight loss and corrosion rate of mild steel, showing a high inhibition efficiency. On the other hand, the medium without inhibitor had more weight loss and corrosion rate. The study also observed that the weight loss and corrosion rate increased slightly as the exposure time increased, implying that the inhibitor became less effective over time and needed to be regularly replaced. The study used the Langmuir adsorption isotherm model to describe the interaction between the inhibitor molecules and the metal surface. The study demonstrated the corrosion inhibition process of bitter leaf extract on mild steel and emphasized the need to optimize the inhibitor concentration and check its effectiveness over time for corrosion prevention applications.
